cqvip:The aim of this study was to document the frequency and types of aura symptoms , to define the relationship between aura symptoms and to define the aura freque ncy in different migraine types. In 952 migraine patients, aura frequency, durat ion, time to headache, characteristics and percentage of headaches with aura wer e analysed. Thirty eight percent of IHS 1.1-1.5 patients reported aura, 38.1% of females and 33.0%of males. Average percentage of aura occurrence with headac he was 19.7%of headaches, average aura duration 27.3 min and aura was followed by headache in 10.4 min on average. Visual disturbances occurred in 92.1%and au ra without visual aura was rare. Aura frequency was headache type dependent. Th e highest frequency of aura was seen in the more full blownmigraine attack. Visual aura is the overwhelming aura symptom. Even in patients with aura the pe rcentage of aura with migraine attacks is limited.
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